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International Lubricant Evaluation
 JASO* Engine Evaluation
Mitsubishi 4D34T4 Evaluation (JASO M354:2006)
 

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  image of apparatus that runs the Mitsubishi 4D34T4 Evaluation offered at SwRI, which evaluates the ability of a crankcase oil subjected to elevated soot generation to prevent valve train wear in a commercial diesel engine.
 

SwRI offers the Mitsubishi 4D34T4 Evaluation, which evaluates the ability of a crankcase oil subjected to elevated soot generation to prevent valve train wear in a commercial diesel engine.

Southwest Research Institute (SwRI) offers the Mitsubishi 4D34T4 Evaluation (JASO M354:2006), which evaluates the ability of a crankcase oil subjected to elevated soot generation to prevent valve train wear in a commercial diesel engine.

 

JASO and ACEA Performance Specifications

The Mitsubishi 4D34T4 procedure is part of JASO and ACEA Global Performance Specifications:
 

JASO Global
DH-1 DLD-1
DLD-2
DLD-3


Field Service Simulated

Steady, full-load operation at maximum power and high temperature is simulated.


Mitsubishi 4D34T4 Fixture

The fixture is an engine dynamometer test stand with a Mitsubishi 4.0 liter, four-cylinder, inline direct injection diesel engine and 6-speed manual transmission, locked in fifth gear, installed.


JASO M354:2006 Parameters

The engine is operated continuously for 160 hours with stoppages at 20-hour intervals for oil top-ups.

 

Properties Target
Engine Speed, rpm 3,200
Engine Torque, N-m Max
Engine Oil Temperature, ° C 105
Coolant Temperature, ° C 90

 

Mitsubishi Parts Evaluated

The camshaft, lifters, and cylinder bores are measured for wear, and piston rings and crankshaft bearings are measured for weight loss. Other engine parts are visually observed for corrosion and abrasive wear.


Used Lubricant Analysis

The following are quantified at 20-hour intervals:

  • Kinematic viscosity

  • Viscosity index

  • Carbon residue soot content

  • Sulphated ash

  • Total acid number

  • Total base number

  • Insolubles

  • Water

  • Fuel dilution

  • Wear metals

Pass / Fail Criteria

Candidate oils must demonstrate a corrected camshaft wear of <95 µm. The correction is calculated as a function of the oil carbon residue content at the end of procedure, normalized to 4.5%.
 

For more information about Mitsubishi 4D34T4 evaluation (JASO M354:2006) capabilities at SwRI or how you can contract with SwRI, please contact Jim McCord at jmccord@swri.org or (210) 522-3439.
 

*Japanese Automobile Standards Organization

 

Contact Information

Jim McCord

Mitsubishi 4D34T4 Evaluation

(210) 522-3439

jmccord@swri.org

Related Terminology

JASO M354:2006

crankcase oil

Mitsubishi 4D34T4

commercial diesel engine

JASO and ACEA global performance specifications

elevated soot

prevent valve train wear

engine test methods

Japanese Automobile Standards
Organization

Related Information

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| Fuels and Lubricants Technology Department | Fuels and Lubricants Research Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

October 17, 2008